Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 50 ppm 100 ppm 200 ppm 150 ppm 50 ppm 100 ppm 200 ppm 150 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Clogging of sewers, is caused due to All of these Silting Greasy and oily matters Low discharge All of these Silting Greasy and oily matters Low discharge ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ‘Cowl’ is provided at Upper end of the manhole First step in manhole Upper end of ventilating column Lower end of ventilating column Upper end of the manhole First step in manhole Upper end of ventilating column Lower end of ventilating column ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In 1000 kg of sewage, the total solids approximate 1 kg to 2.0 kg 5 kg to 7.5 kg 0.5 to 1.0 kg 7.5 kg to 10 kg 1 kg to 2.0 kg 5 kg to 7.5 kg 0.5 to 1.0 kg 7.5 kg to 10 kg ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Active decomposition Recovery Degradation Cleaner water Active decomposition Recovery Degradation Cleaner water ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers designed with self cleansing velocity, Neither silting nor scouring occurs at the bottom The bottom is silted Both silting and scouring occur at the bottom The bottom is scoured Neither silting nor scouring occurs at the bottom The bottom is silted Both silting and scouring occur at the bottom The bottom is scoured ANSWER DOWNLOAD EXAMIANS APP
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